import java.util.ArrayList;
import java.util.Collection;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 晓星航
 * Date: 2023-01-14
 * Time: 16:37
 */

public class TestDemo {
    public static void main(String[] args) {
        Collection collection = new ArrayList();
        collection.add("xxh");
        collection.add(12);
    }
}
